| NWS Forecast for: Portsmouth NH Issued by: National Weather Service Gray/Portland, ME Last Update: 6:22 am EDT Jul 19, 2025 | |
This Afternoon: Mostly sunny, with a high near 81. Southeast wind around 5 mph. Tonight: Increasing clouds, with a low around 67. South wind around 5 mph. Sunday: Scattered showers before 11am, then showers likely and possibly a thunderstorm between 11am and 4pm, then scattered showers and thunderstorms after 4pm. Some of the storms could be severe. Partly sunny, with a high near 85. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Sunday Night: Scattered showers and thunderstorms before 7pm. Some of the storms could be severe. Mostly clear, with a low around 62. Northwest wind around 5 mph. Chance of precipitation is 30%. Monday: Sunny, with a high near 78. Northwest wind 5 to 10 mph. Monday Night: Mostly clear, with a low around 55. Tuesday: Sunny, with a high near 77. Tuesday Night: Mostly clear, with a low around 57. Wednesday: Sunny, with a high near 81. Wednesday Night: Partly cloudy, with a low around 64. Thursday: Mostly sunny, with a high near 86. Thursday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 69. Friday: A 30 percent chance of showers. Partly sunny, with a high near 87. | |
| Portsmouth NH 43.07°N 70.78°W (Elev. 33 ft) | |
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